indent help

Hello, I am having some problems running an indentation, my regions freely pass through one another when I move them. Can someone please help me understand why this is happening and how to fix it?
I am new to lammps and any advice is very helpful.
Thank you

echo screen
clear
units metal
boundary p p p
atom_style atomic

#creating simulation box
region box block 0 80 0 100 0 80 units box
create_box 2 box

lattice diamond 3.567
region 1 sphere 40 90 40 5 units box
create_atoms 1 region 1 units box
group cutter region 1

lattice fcc 5.431
region 2 block 0 80 0 80 0 80 units box
create_atoms 2 region 2 units box
group atomgroup region 2
#assign mass of atoms and indenter
mass 1 12.0107 #diamond
mass 2 28.1 #Si

neighbor 2.0 bin
neigh_modify delay 0 every 1 check yes

#Force Fieilds
pair_style tersoff
pair_coeff * * SiC.potential C C
pair_coeff * * SiC.potential Si Si
pair_coeff * * SiC.potential C Si

#----------minimize
min_style cg
minimize 1.0e-4 1.0e-5 10000 10000

region 4 block 0 80 0 3 0 80 units box
region 5 block 0 2 0 80 0 80 units box
region 6 block 78 80 0 80 0 80 units box

group fixed1 region 4
group fixed2 region 5
group fixed3 region 6
group fixedatoms union fixed1 fixed2 fixed3 atomgroup
group mobileatoms subtract all fixedatoms

region 7 block 0 80 77 80 0 80
region 8 block 0 80 0 3 0 80
region 9 block 0 80 0 80 77 80
region 10 block 0 3 0 80 0 80
region 11 block 0 80 0 80 0 3
region 12 block 77 80 0 80 0 80

group thermo1 region 7
group thermo2 region 8
group thermo3 region 9
group thermo4 region 10
group thermo5 region 11
group thermo6 region 12
group thermos union thermo1 thermo2 thermo3 thermo4 thermo5 thermo6

group atomgroup subtract all fixedatoms

compute 1 mobileatoms temp
velocity all create 298.0 123456
fix 1 thermos temp/rescale 1 298 298 0.5 1.0
fix 2 mobileatoms nve

thermo 1000

dump 1 all atom 250 mytrydump

fix 3 cutter move linear 0.0 -0.02 0
run 150000
unfix 3

fix 4 cutter move linear 0.0 0.02 0
run 150000

Not enough detail, and no one is likely to read/comprehend a large

input script. What do you mean regions are passing thru each

other, and why do you expect them not to?

Steve